Dear visitor, welcome to SPRINKLER TALK FORUM - You Got Questions, We've Got Answers. If this is your first visit here, please read the Help. It explains how this page works. You must be registered before you can use all the page's features. Please use the registration form, to register here or read more information about the registration process. If you are already registered, please login here.

what kind of pressure vacuum breaker did you have? I know the good (expensive) ones do not do this, but the homedepot ones do, example: TORO. Iam assuming that the blowout tee is before the PVB. What kind do you have? You could unscrew the top and check that everything inside is lined up. Let us know!